Costiera Amalfitana with its near 50 km of coast offers the opportunity to live involving dives on seabeds which increase from seashore as far as remarkable deep. Vegetation, made of posidonia which animates sand and muddy deposits swept by rivers and fauna, that in the past was also characterized by proliferation of corals, welcomes all those want to explore this particular aspect of the Coast introducing them in a world to be discovered among submerged or emerged grottos with geologic formations produced by water actions during the centuries. Each grotto’s beauty is enriched by sea reflexes which have different colours according to each hour and season thanks to siphons opened towards the sky.